The following are lists of insects of Great Britain. There are more than 20,000 insects of Great Britain, this page provides lists by order.
Dragonflies and damselflies (Odonata)
Grasshoppers & crickets (Orthoptera), earwigs (Dermaptera) and cockroaches (Dictyoptera)
Mayflies (Ephemeroptera)
Flies (Diptera)
Beetles (Coleoptera)
Bees, wasps, ants and related insects (Hymenoptera)
Butterflies and moths (Lepidoptera)
True bugs (Hemiptera)
References